import json

config = {
  "type": "cube",
  "lcd": {
      "height": 240,
      "width": 240,
      "invert": 1,
      "dir": 96
  },
  "board_info": {
      'BOOT_KEY': 16,
      'LED_R': 13,
      'LED_G': 12,
      'LED_B': 14,
      'LED_W': 32,
      'BACK': 11,
      'ENTER': 10,
      'NEXT': 16,
      'WIFI_TX': 6,
      'WIFI_RX': 7,
      'WIFI_EN': 8,
      'I2S0_MCLK': 19,
      'I2S0_SCLK': 35,
      'I2S0_WS': 33,
      'I2S0_IN_D0': 34,
      'I2S0_OUT_D2': 18,
      'I2C_SDA': 31,
      'I2C_SCL': 30,
      'SPI_SCLK': 21,
      'SPI_MOSI': 8,
      'SPI_MISO': 15,
      'SPI_CS': 20,
  }
}

cfg = json.dumps(config)
print(cfg)

try:
  with open('/flash/config.json', 'rb') as f:
    tmp = json.loads(f.read())
    print(tmp)
    if tmp["type"] != config["type"]:
      raise Exception('config.json no exist')
except Exception as e:
  with open('/flash/config.json', "w") as f:
    f.write(cfg)
  import machine
  machine.reset()
